No more offensive than putting a traditional pueblo dwelling on a map of Mexico... or a teepee on a map of the USA... It's just a depection of a region's traditional aboriginal dwelling. What's so offensive about that?

Have these map images been recently updated? It looks like those mountains might have been revised. It's possible that the old version had the Mauritania/Algeria border blocked off, and that the new map changed that (intentionally or not) without changing the XML.